Crossword Genius

Stupid angle? (6)

Ross

I believe the answer is:

obtuse

I believe this is a double definition.

'stupid' is the first definition.
(similar in meaning)

'angle?' is the second definition.
(obtuse angle is a kind of angle)

(Other definitions for obtuse that I've seen before include "Blunt, not sensitive" , "Angle between 90 and 180 degrees" , "Lacking in insight" , "(Of angle) between 90deg and 180deg - dull" , "Blunt or unintelligent" .)

I've seen this clue in The Irish Times.
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